Cloth-cutting machine



Oct. 18,1927. MAIMIN 31 CLOTH CUTTING MACHINE Filed Dec. 17. 1925 2 ShOQti-ShQO'. 1

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- D. s. MAlMlN CLOTH CUTTING MACHINE Filed Dec. 17. 1925 Z'ShOItI-SM 2 i2 INVENTOR 99W! 5. 0mm

AL ATTORNEY;

Patented a. 1a, 1927.

UNITED STATES PATENT OFFICE.

DAVID S. MAIMIN, OF NEW YORK, N. Y., ASSIGNOR TO K. MAIMIN COMPANY INCOR- YORA'I'ED, A CORPORATION OF NEW YORK- (morn-comma Maonnm.

This invention relates to cloth-cutting machines and more particularly to means for holding the goods in cutting position and gauging the amount to be cut off when'the 6 machine is stationary .and thegoods moved against the knife.

Movable cloth-cutting machines are fre-"' quently used to cut rolls of cloth into short 7 length units, as for example, in hospitals where long rolls of auze are cut into andage rolls varying mm a fraction of an inch to a few inches in length. In such operations the machine is held stationary and the roll moved-against the rotating or reciprocating knife. The'units to be cut may be marked off along the roll but this is at best a crude and inaccurate method. It has been proposed to employ a gauge adjustably mounted on the base of the machine and provided with an upstanding stopor abutment fixed a predetermined istance from the knife against which the end of the roll is held during the cutting operation. By means of this gauge the roll can be cut into units of any given length without other measurement. It is difficult, however, even when using such a gauge, for the operator to hold the roll perpendicular to the plane of the knife throughout the cut, and this is of course, necessary if a clean square cut is to be made. It is therefore an object of the resent invention to provide means for boldmg the roll perpendicular to the plane of the knife throughout the cut and at the same time gauging the len th of the units so that the roll can be quickly and accurately cut into units of any given length. Accordingly I mount on the base of the machine a supporting carriage for the roll movable transversely toward and awa from the knife but in which the roll is eld perpendicular to the plane of the knife .at all times. The end of this carriage beyond the knife is provided with an adjustable stop which acts as a gauge to determine the length of the units to be out.

In the accompanying drawings I haveillustrated a preferred embodiment of my invention. In these drawings Figure 1 is a front elevation of a cloth-eutting machine of the rotary knife type equipped with the roll supporting carr age and gauge of the present invention; Figure 2 is a horizontal section taken through the center of the knife showing the carriage in plan view; Figure 3 a side elevation of the cloth-cutting machine shown in Figure 1, and Figure 4 is an enlarged detail showing the manner in 'whlch the carria e is mounted on the base of the machine and lndicating the action during the cutting.

The cloth-cutting machine illustrated in thesedrawmgs comprises the usual base 1 carrying a sup ort 2 supporting a rotary kn fe and a riving motor 4. This mach ne 1s provided above and in front of the knife with a vertically adjustable guard 5 which in the usual operation of the machine in cutting stationary lays of cloth also serves as a presser foot. In using the machine to cut unit lengths from a long roll of cloth, however. the machine is held stationary and the cloth roll to be cut is moved into contact with the rotating knife. I shall now describe the supporting carriage and gauge of the present invention designed for use in connection with operations of this kind.

Mounted upon the base 1 is a horizontal roll-receiving carriage 6 provided with a bottom and a side wall, supported at its inner end upon the base itself and at its outer end b means of a roller 7 which rests upon the ta le or other fiat surface on which the machine is placed. The inner end of the carriage is provided with a rearwardly extending arm 8 provided with a longitudinal slot 9 by means of which it is movably secured to the base through a guide plate 10 provided with a longitudinal rib 11 extending within the slot 9, and two downwardly extending lugs 12 which are seated within recesses in the upper face of the base. This plate is held in position by means of a bolt 13 extending through the base and terminat ing in a wing nut 14. The space between the plate 10 and the base 1, defined by the depth of the rib 11, is suflicient to permit the arm 8 to slide freely without binding while the rib serves as a guide and insures that the carriage 6 always moves parallel to its original position. A coil spring 15 connecting an upstanding In 16 on the outer end of the arm 8 and a pm 17 on the plate 10 nor mally urges the carriage into a osition beyond the edge of the knife as il ustrated in Figures 2 and 3 and in full lines in Figure 4.

The end of the carria e adjacent the knife is provided with an 0 -set portion 18 bent in the shape of a Z as illustrated most clearly in Figure 2. On the outer end of this off-set is mounted a gauge comprising an inwardly extending stop 19 and a relatively longer arm 20 extending parallel with the carriage. This arm 20 extends through the off-set 18 and is supported by it. The lower edge of the arm 20 is provided with a plurality of notches 21 spaced a predetermined distance from the inner face of the stop 19. Pivotally mounted on the off-set, just below the arm, is a springpressed pawl 22 adapted to engage one of the notches 21 and hold the stop any given desired distance from the knife. The pawl 22 is provided with a manually operable key 23 by means of which the pawl can be controlled and the stop set to measure any desired length of roll.

The apparatus operates as follows: With the parts arranged as illustrated in Figures 1, 2 and 3 a long roll 24 of cloth, such as bandage gauze, is placed upon the carriage 6 in contact with the side wall. In order to insure the retention of the roll 24 upon the carriage and hold it always in fixed position laterally thereof I provide a spring clip 25 which bears gently upon it and holds it firmly in place without interfering with the necessary longitudinal feeding movement. The roll is then moved longitudinally until its inner end abuts against the stop 19, as illustrated in Figure 2, the stop belng set so that the distance between its inner face and the plane of the knife is the desired width of the bandage roll to be cut. The operator now grasps the carriage and slides it and the roll toward the rapidly rotating knife blade. This is a quick movement and no thought need be given to the position of the roll other than to see that its end abuts against the stop 19 and that it lies tangent to the bottom and side wall of the carriage, the carria e being set so that the roll is held perpen icular to the plane of the knife throughout the cut-ting operation. At the end of the in-stroke the carriage is in the position illustrated in dotted lines in Figure 4 and the first unit has been severed from the roll. The severed unit eases 1 rolls out. of the way, the operator releases his hold upon the carriage, and the spring 15 immediatel returns the carriage and roll to their initia position. Thereupon the operator slides the roll 24 longitudinally again until its freshly cut end abuts against the stop 19 and the operation is repeated. The offset 18 and the guard 5 cooperate to protect the fingers of the operator from the ra idly rotating knife.

y means of the apparatus just described units of any desired length can be out, quickly and accurately. When the machine is once set the operator simply slides the roll into abutment against the stop and moves the carriage toward the knife. The roll if properly seated upon the carriage is always normal to the plane of the knife and a clean square cut is unavoidable.

I claim:

1. A cloth-cutting machine comprising the combination of a knife, a base on which the knife is mounted, a carriage transversely movable for supporting a roll of cloth, a slottedarm on said carriage, a guide on the base extending into the slot of the arm and a stop on the carria e for determining the length of the roll to be cut.

2. An attachment for a cloth-cutting ma chine having a knife and a base on which the knife is mounted, comprising the combination of a transversely movable carriage for supporting a roll of cloth perpendicular to the plane of the knife, a slotted arm on the carriage supported on the base, a guide on the base extending into the slot and restricting movement of the carriage except in a direction parallel with the plane of the knife, a roller supporting the outer end of the carriage, a spring normally holding the carriage and roll beyond the cutting edge of the knife, an off-set portion on the carriage adjacent the knife and an adjustable stop mounted upon the off-set for determining the length of the roll to be cut.

In testimony whereof I aflix my signature.

DAVID S. MAIMIN. 

